// 测试版本 - 使用简化签名验证
console.log('Background test script loaded');

const API_SECRET = "YxmKSrQR4uoJ5lOoWIhcbd7SlUEh9OOc";
const API_BASE_URL = "http://browser-plug-api.yangjibao.com";

// 真正的MD5实现
function md5(str) {
    function utf8Encode(str) {
        return unescape(encodeURIComponent(str));
    }
    
    function binl2hex(binarray) {
        const hex_tab = "0123456789abcdef";
        let str = "";
        for (let i = 0; i < binarray.length * 4; i++) {
            str += hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8 + 4)) & 0xF) +
                   hex_tab.charAt((binarray[i >> 2] >> ((i % 4) * 8)) & 0xF);
        }
        return str;
    }
    
    function str2binl(str) {
        const bin = [];
        const mask = (1 << 8) - 1;
        for (let i = 0; i < str.length * 8; i += 8) {
            bin[i >> 5] |= (str.charCodeAt(i / 8) & mask) << (i % 32);
        }
        return bin;
    }
    
    function binlMD5(x, len) {
        x[len >> 5] |= 0x80 << ((len) % 32);
        x[(((len + 64) >>> 9) << 4) + 14] = len;
        
        let a = 1732584193;
        let b = -271733879;
        let c = -1732584194;
        let d = 271733878;
        
        for (let i = 0; i < x.length; i += 16) {
            const olda = a, oldb = b, oldc = c, oldd = d;
            
            a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936);
            d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586);
            c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819);
            b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330);
            a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897);
            d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426);
            c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341);
            b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983);
            a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416);
            d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417);
            c = md5_ff(c, d, a, b, x[i + 10], 17, -42063);
            b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162);
            a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682);
            d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101);
            c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290);
            b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329);
            
            a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510);
            d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632);
            c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713);
            b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302);
            a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691);
            d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083);
            c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335);
            b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848);
            a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438);
            d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690);
            c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961);
            b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501);
            a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467);
            d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784);
            c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473);
            b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734);
            
            a = md5_hh(a, b, c, d, x[i + 5], 4, -378558);
            d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463);
            c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562);
            b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556);
            a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060);
            d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353);
            c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632);
            b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640);
            a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174);
            d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222);
            c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979);
            b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189);
            a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487);
            d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835);
            c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520);
            b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651);
            
            a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844);
            d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415);
            c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905);
            b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055);
            a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571);
            d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606);
            c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523);
            b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799);
            a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359);
            d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744);
            c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380);
            b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649);
            a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070);
            d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379);
            c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259);
            b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551);
            
            a = safe_add(a, olda);
            b = safe_add(b, oldb);
            c = safe_add(c, oldc);
            d = safe_add(d, oldd);
        }
        return [a, b, c, d];
    }
    
    function md5_cmn(q, a, b, x, s, t) {
        return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b);
    }
    
    function md5_ff(a, b, c, d, x, s, t) {
        return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
    }
    
    function md5_gg(a, b, c, d, x, s, t) {
        return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
    }
    
    function md5_hh(a, b, c, d, x, s, t) {
        return md5_cmn(b ^ c ^ d, a, b, x, s, t);
    }
    
    function md5_ii(a, b, c, d, x, s, t) {
        return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
    }
    
    function safe_add(x, y) {
        const lsw = (x & 0xFFFF) + (y & 0xFFFF);
        const msw = (x >> 16) + (y >> 16) + (lsw >> 16);
        return (msw << 16) | (lsw & 0xFFFF);
    }
    
    function bit_rol(num, cnt) {
        return (num << cnt) | (num >>> (32 - cnt));
    }
    
    str = utf8Encode(str);
    return binl2hex(binlMD5(str2binl(str), str.length * 8));
}

// Storage API wrapper
const storageAPI = {
    set: function(key, value) {
        return new Promise((resolve) => {
            chrome.storage.local.set({ [key]: value }, () => resolve("success"));
        });
    },
    get: function(key) {
        return new Promise((resolve) => {
            chrome.storage.local.get(key, (result) => resolve(result[key]));
        });
    },
    remove: function(key) {
        return new Promise((resolve) => {
            chrome.storage.local.remove(key, () => resolve("success"));
        });
    }
};

// 改进的HTTP请求函数（使用签名）
async function makeRequest(url, options = {}) {
    console.log('Making test request to:', API_BASE_URL + url);
    
    const token = await storageAPI.get('token') || '';
    const requestTime = Math.floor(Date.now() / 1000);
    
    // 生成请求签名 - 尝试不同的构造方式
    const pathname = new URL(API_BASE_URL).pathname;
    const cleanPathname = pathname === '/' ? '' : pathname;
    const urlPath = url.split('?')[0];
    
    // 尝试多种签名构造方式
    const signString1 = cleanPathname + urlPath + token + requestTime + API_SECRET;
    const signString2 = urlPath + token + requestTime + API_SECRET;
    const signString3 = pathname + urlPath + token + requestTime + API_SECRET;
    
    const requestSign = md5(signString2); // 先尝试最简单的构造
    
    console.log('URL:', API_BASE_URL + url);
    console.log('Pathname:', pathname);
    console.log('Clean pathname:', cleanPathname);
    console.log('URL path:', urlPath);
    console.log('Token:', token);
    console.log('Request time:', requestTime);
    console.log('API secret:', API_SECRET);
    console.log('Sign string 1:', signString1);
    console.log('Sign string 2:', signString2);
    console.log('Sign string 3:', signString3);
    console.log('Generated sign:', requestSign);
    
    const headers = {
        'Content-Type': 'application/json',
        'Request-Time': requestTime.toString(),
        'Authorization': token,
        'Request-Sign': requestSign,
        ...options.headers
    };
    
    try {
        const response = await fetch(API_BASE_URL + url, {
            method: options.method || 'GET',
            headers: headers,
            body: options.body ? JSON.stringify(options.body) : undefined
        });
        
        console.log('Response status:', response.status);
        console.log('Response headers:', [...response.headers.entries()]);
        
        const responseText = await response.text();
        console.log('Response text:', responseText);
        
        let data;
        try {
            data = JSON.parse(responseText);
        } catch (e) {
            throw new Error('Invalid JSON response: ' + responseText);
        }
        
        return { success: true, data: data, status: response.status };
    } catch (error) {
        console.error('API request failed:', error);
        return { success: false, error: error.message };
    }
}

// 消息处理器
chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
    console.log('Received message:', message);
    
    handleMessage(message).then(result => {
        console.log('Sending response:', result);
        sendResponse(result);
    }).catch(error => {
        console.error('Message handling error:', error);
        sendResponse({ type: 'error', data: error.message });
    });
    
    return true; // 保持消息通道开放
});

async function handleMessage(message) {
    switch (message.type) {
        case 'test':
            return { type: 'test', data: 'Service worker is working' };
            
        case 'indexData':
            const result = await makeRequest('/index_data');
            return { type: message.type, success: result.success, data: result.data, error: result.error };
            
        case 'updateData':
            const updateResult = await makeRequest(`/version_info?version=${message.param}`);
            return { type: message.type, success: updateResult.success, data: updateResult.data, error: updateResult.error };
            
        default:
            return { type: 'unknown', message: 'Unknown message type: ' + message.type };
    }
}

// Badge相关功能
function hideBadge() {
    chrome.action.setBadgeText({ text: "" });
    chrome.action.setTitle({ title: "支持一键导入，最方便的基金实时收益查看工具。" });
}

// 初始化
console.log('Background test script initialized');
hideBadge();
